Berkovich, M.; Leimeister, J. M. & Krcmar, H. (2009), Suitability of product development methods for hybrid products as bundles of classic products, software and service elements, in 'ASME 2009 - International Design Engineering Technical Conferences & Computers and Information in Engineering Conference IDETC/CIE' .
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2001

Stratmann, J. (2001), Bedarfsgerechte Informationsversorgung im Rahmen eines produktlebenszyklusorientierten Controlling , Vol. Bd. 71 , Eul , Lohmar, Köln .
[BibTeX]  [Endnote]